Upholstery support pad



Jan. 15, 1952 w. A. CLARK 2,582,479

UPHOLSTERY SUPPORT PAD Filed'Nov. 9, 194e INVENTOR .4 f7@ 4i wma ff. wm/f f5/MM ATTORNEY Patented Jan. 15, 1952 2,582,479 UPHOLSTERY SUPPORT PAD William A. Clark, Detroit, Mich., assignor to L. A.v Young Spring and Wire Corporation, Detroit, Mich., a corporation of Michigan Application November 9, 1946, Serial No. 708,969

4 Claims.

This invention relates to improvements in spring structures and padding therefor.

The main objects of this invention are:

First, to provide a spring structure in which body springs of the Zig-zag type are employed the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary plan view of a cushion structure embodying my invention, parts being broken away and parts being shown conventionally for convenience in illustration.

Fig. 2 is a fragmentary perspective view of a cushion mat embodying the invention, the mat being partially opened to disclose structure thereof, the adhesive for the open portion of the mat not being illustrated.

Fig. 3 is an enlarged fragmentary view in section on a line corresponding to line 3-3 of Fig. 2.

Fig. 4 is an enlarged fragmentary View in section on a line corresponding to line 4-4 of Fig. 2.

In the accompanying drawing, I have not illustrated the supporting frame for the body springs l which are of the zig-zag type but it will be understood that these springs are mounted at their ends on opposed frame members with the springs in arched condition. This is a known manner of mounting springs of this type. The adjacent bights of the zig-zag springs I are connected by the continuous helical tie members 2 which are threaded or rotated so that the coils thereof embrace the bights of adjacent springs l.

My improved upholstery mat 3 comprises sheets 4, 4 of fibrous material, preferably kraft paper. This kraft paper while flexible is strong and has a high resistance to tearing stresses. These sheets of paper are reinforced by wire strands 5 disposed in parallel relation between the strands. The strands are formed from a continuous length of wire bent zig-zag, each adjacent pair of strands being connected at one end by the bights 6. The ends of the strands are adjacent to but at the same time substantially spaced from the adjacent edges 1 of the sheets.

The sheets are adhesively secured together between the strands and at the ends of the strands by the adhesive 8 which is desirably an asphaltic adhesive which maintains its flexibility and also serves to render the mat water or moisture resistant. The asphaltic adhesive is applied in fluid condition and substantially impregnates the sheets as is indicated in the drawing. The strands are desirably embedded in the adhesive as is indicated in Fig. 3. In any event, the adhesive is arranged to secure the sheets together between the strands thereby preventing shifting of the strands relative to the sheets under the flexing of the mat such as occurs in use.

The mat is laid upon the body springs and is desirably secured thereto by clips 9 which engage the bights of the strands, securing them to underlying reaches of the body springs as is shown in Fig. 1. It is not essential that each bight of the reinforcing unit be secured but sufficient of them should be secured so that the mat cannot shift materially on the supporting springs.

The padding l0 is arranged on the mat and the upholstery covering l I arranged on the padding. I have not illustrated the manner in which the upholstery covering is secured to the cushion.

Spring structures embodying my invention may be made veryl resilient and at the same time the upholstery is supported so that it cannot work down between the body springs. The reinforcing strands of the mat are arranged so that at least one of each adjacent `pair overlies the body springs although even when they might be positioned directly above the helical tie members 2 they are well supported.

I have not attempted to illustrate certain embodiments and adaptations of the invention as it is believed that this disclosure will enable those skilled in the art to embody or adapt the invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. An upholstery mat or cover for spring structures comprising a pair of sheets of kraft paper and a plurality of reinforcing strands formed from a continuous length of wire bent zig-zag whereby adjacent strands are connected and uniformly spaced in parallel relation by U-shaped bights, said reinforcing strands being disposed between the sheets with the bights between andv adjacent but spaced inwardly from the edges of the sheets, the sheets being adhesively secured together throughout substantially the entire area thereof by asphalt with the asphalt embracing the strands and the bights thereof throughout substantially the entire lengths of the strands and bights.

2. An upholstery mat for spring cushion structures comprising a pair of sheets of paper and a plurality of reinforcing strands disposed in parallel relation between the strands and formed from a continuous length of wire bent zig-zag whereby the adjacent strands are connected at one end, the ends of the strands being between and adjacent to but spaced inwardly from the corresponding edges of the sheets, the sheets being adhesively secured together throughout substantially the entire area between the strands and at the ends thereof, the adhesive being a waterproof material and substantially impregnating the sheets.

3. An upholstery supporting mat or cover forv spring structures comprising sheets of-exible fibrous material and a plurality of reinforcing wire strands disposed between the sheets, the strands being formed from a continuous length of wire bent zig-zag whereby adjacent strands are, connected and uniformly spaced, the sheets being secured together throughout substantially the entire area between and at the ends of the strands by a flexible adhesive.

4. In a spring structure and a mat therefor, the combination of a mat and a plurality of connected body springs for supporting the mat, said mat comprising sheets of ilexible fibrous material and a plurality of strands disposed between said sheets and formed from a continuous length of wire bent zig-zag whereby adjacent strands are integrally connected at their adjacent ends, the ends of the strands being adjacent to but spaced inwardly from the corresponding edges of the sheets, the sheets being adhesively secured together throughout substantially their entire area between the strands and outwardly beyond the ends of the strands and clips extending through the pair of sheets and embracing the connected ends of certain of the strands and embracing certain of the body springs for connecting the mat to the body springs.

WILLIAM A. CLARK.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,383,734 Luedecke July 5, 1921 1,884,270 Rylander Oct. 25, 1932 2,133,762 Williams Oct. 18, 1938 2,221,507 Clark Nov. 12, 1940 2,283,116 Young May l2, 1942 2,430,612 Heuer Nov. 11, 1947 

